Used with existing locks - Non locking alarm Accepts 1-1/8" mortise cylinder inside, rim cylinder outside, long tailpiece recommended (not furnished) 9V battery included with low alert & flashing LED - 9-1/2" W x 2" H x 2-3/8" D - suitable for narrow stile doors Has programmable 15 sec. entry or delay, comes with two types of tamper proof switches Audible low battery warning 3 Programmable 95 db siren styles: sweep, pulsed and steady Provisions for external reed-switch contacts for multiple door monitoring Dimensions: 9" W x 2-1/2" H x 2-3/8" D Finish: Aluminum Two selectable arming modes - 1. Always armed mode - when key is turned counter clockwise to the disarm position, the key cannot be removed. To remove key, turn back to arm mode, thus keeping unit armed always. 2. Standard arming mode - when key is inserted turning counter clockwise will disarm and key can be removed. Turning key clockwise will arm and key can be removed Max-Flex Terminals, allowing for any or all of the following: Continuous power with the addition of an external power supply, multiple door monitoring permitted with built-in external reed switches Status Indicator - The LED will indicate RED when armed Entry Delay Time Options - include 15 seconds, 1 minute 15 seconds & 3 minutes 15 seconds Sleek model design key-activated door alarm for use on standard size and narrow stile doors Unauthorized use of door causes alarm to sound and activates LED indicator Options include c